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Scene-based non-uniformity correction for detector arrays

  • US 20020159101A1
  • Filed: 04/25/2001
  • Published: 10/31/2002
  • Est. Priority Date: 04/25/2001
  • Status: Active Grant
First Claim
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1. A method of providing corrected values of gain and level coefficients of a set of correction coefficients for a scanning detector array, the scanning detector array comprising a plurality of detector channels, the method comprising the steps of:

  • modifying first values of the gain and level coefficients using at least one frame of image data collected by the scanning detector array from out-of-focus multiple-temperature imagery; and

    determining updated values of the gain and level coefficients using a scene-based non-uniformity correction (SBNUC) routine applied to scene data corresponding to focused scene imagery.

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